Refrigeration



INVENTOR, Q41. J

' W], 4.11 :4. ATTORNEYf Patented May It), 1938 i UNITED STATES PATENT OFFICE REFRIGERATION Carl T. Ashby, Evansville, Ind., assignor to Servel, Inc., New York, N. Y., a corporation ot'Delaware Application January 7, 1936, Serial No. 57,877

6 Claims. (01. 261-119) My invention relates to refrigeration and more In operation, liquid enters the device through particularly to an improved absorber or evapthe inlet l2 and flows along the bottom of the orator construction for an absorption refrigeratube and in the presence of a gas. As it flows tion system of the inert gas pressure equalized around the bend it is drawn into the angle formed type as disclosed in U. S. Patent No. 1,609,334 to by the walls of the rod l3 and the tube. Liquid 5 von Platen and Munters. is held in the angular space by capillarity. After In evaporators and absorbers for this type of it passes the bend, most of the liquid flows down system various methods have been used for inover the walls of the tube in a constantly movcreasing the effectiveness of gas and liquid coning thin layer having a large surface. Some of '10 tact, such as providing mesh within the tube, the liquid will also form a film on the rod and or providing discs or dams to increase the surdrip from the rod. face covered by the liquid. The object of the Various modifications may be made within the present invention is to provide a very simple, inspirit and scope of the invention as indicated in expensive, and more ehective construction to the following claims. l5 produce this result. What I claim is: Y

Further objects and advantages will become 1 Gas and liquid t t apparatus for ppe e t om the following description tak frigeration apparatus including a coil having inin conjunc on w t the accompanying drawing. clined straight portions and bent portions, strucin which! ture for introducing gas and liquid into said coil Fi 1 is a d rammati sh of a at xfor flow thereof in the presence of each other, 20 changer in accordance with the invention; and and capillary means within the 1 secured to e- 2 is e croswectionel view of the tube the inner wall of said coil at each of said bent forming the heat exchanger of Fig. 1. portions and to the upper wall of the straight Referring to- Fig. l, the heat exchanger which portion immediately therebelom may be either an absorber an evapc'l'atol 2. Gas and liquid contact apparatus for refrig- 25 prises a coil havin a nu ber o ncl ned straight eration apparatus including a coil having inclined portions 0 and bent portions H, and 9.11 straight and bent portions structure for it at its upper end for entrance of absorption liqintroducing gas and liquid into said can for flow uid, refrigerant, or other liquid. The exchanger thereof in the presence of each other, and a is mounted in vertical plane to permit flow of plurality of rods within the coil, each of said 30 g e gf zi m f g ggg g 53353 2; rods contacting the inner wall of said coilat one a f i n ti and the u r wall of the straight metal tubes having a bend at one end, the gaggsgggg ggf ggg straight end of each tube being welded to the 3 A heat exchange device including a tube Egg i ?zfi E i ggigggg i clined from a vertical plane, structure for introrod z fi preiz bly roufided wlii h is vvelde iz i a i its ducmg gas and liquid into Said tube for flow thereends or along its length to the tube so that upon f mlthe presznce szg fif; 533 23 5; assembly of the heat exchanger the rod lies close- 0 at er to g n t or 40 1y against the inner wall or the tube at the bent said tube an secure e upper W 40 portion and the upper wall of the tube alon the the tubelength of the inclined straight portion. g 4. A heat exchange device including a tube in Th liquid flows 1 th presence of a gas which clined from a vertical plane, structure for intromaybe introduced at l4 into the upper end of the ducmg gas and liquid said tube for flow coil, or at it into the lower end of the coil. When thereof i the presence of each other. and a mall- 45 the coil is employed as an absorber i an b er member extending lengthwise within and setion refrigeration system of the type referred to cured ag st t pp Wall P Of e t b above and absorption liquid enters through inlet said member being curved in section and forming ii, a gas mixture of refrigerant and inert gas is angular spaces with the upper wall part of said introduced into the lower end of the coil at 15. tube for holding liquid by capillarity. 50 When the coil is employed as an evaporator in 5. A heat exchange device including a tube such an absorption refrigeration system and liqsomewhat ihclined to the horizontal, structure for uid refrigerant enters through inlet l2, inert gas introducing gas and liquid into said tube for flow may be introduced into the upper end of the coil thereof in the presence of each other, and asmall- 8t er member extending in the direction of its length 55 within said tube and attached to the ceiling there- 6. A heat exchange device including a tube somewhat inclined to the horizontal, structure for introducing gas and liquid into said tube for flow thereof in the presence of each other, and a smaller member extending in the direction of its length within said tube and attached to the ceiling thereof to form a catching device with the tube for guiding liquid into the crevices formed between the tube and said smaller member.

CARL T. ASHBY. 

